Steam injector for furnaces



March 23 1926. 1,577,891

N. H. BROWN I STEAM INJECTOR FOR FURNACES Filed May 22, 1925 [IV VENTORMaj/B1 00 i In Patented Mar. 23, 193 1.

PATENT OFFICE.

NON H. BROWN, OF DETROIT, MICHIGAN.

STEAM INJECTOR FOR FURNACES.

Application filed May 22, 1925. Serial No. 32,234.

To all whom it may concern:

Be it known that I, NON H. BROWN, a citizen of the United States, andresiding at Detroit, county of Wayne, State of Michigan, have invented anew and Improved Steam Injector for Furnaces, of which the following isa specification.

This invention relates to furnace attachments, and relates particularlyto attachments to furnaces for the purpose of injecting steam to inducea more complete combustion of fuel and to substantially prevent theformation of smoke.

It is the object of the invention to provide a steam injector of thedescribed character that will act to spread steam in the form of ablanket or stratumabove the fire.

Another object is to form such a stratum of steam by discharging thesteam in the form of angularly intersecting jets.

These and various other objects will be apparent from the followingdescription wherein reference is made to the accompanying drawingsillustrating a preferred embodiment of my invention.

Figure 1 is a view in sectional elevation of a steam boiler equippedwith the improved device.

Figure 2 is a detail plan view of the injector.

Figure 3 is an enlarged side view of the same.

Figure t is an enlarged plan view of one of the branches of the jet ofthe injector.

In these views, the reference character 1 designates a boiler, the upperportion of which is tapped by theusual pipe 2 for de livering steam fromsaid boiler to any desired point. For heating said boiler, thereprovided a fire-box 3, equipped with the usual grate l. The presentinvention cousists in connecting to the pipe 2 or to any other source ofsteam supply, a pipe 5 controlled by a valve '6 and having a portion 5*projecting into the fire-box through the front wall of the boiler, andprovided with divergent branches 7, each terminating in a pair ofdivergent jet nozzles 8, disposed preferably in a common vertical plane.The nozzles 8 of each pair are provided with outlets 9, from which thesteam dischargesin intersecting jets 10, producing through their impacta thin blanket or stratum of V steam 11, extending horizontally abovethe fire. The products of combustion as they rise from the burning fuelencounter this steam blanket, and the resultant moistening of any solidparticles carried in suspension by said gases so increases the weight ofsaid particles that they fall back into the fire where they are fullyconsumed.

Thus the construction serves at the same time to effect a completecombustion of fuel and to avoid the formation of smoke.

The described injector is particularly desirable for its purpose becausein a very simple manner it produces a thin blanket of steam fully abovethe the such as to encounter substantially all of the rising combustiongases, and release; from the latter suspended solid particles.

From the foregoing description it becomes evident that the device isefficient in operation, and provides a device which accomplishes theobjects described.

While it will be apparent that the illus trated embodiment of myinvention herein disclosed is well calculated'to adequately fulfill theobjects andadvantages primarily stated, it is to be understood that theinvention is susceptible to variations, modifications and change withinthe spirit and scope of the subjomed claims.

Having thus described my invention, I claim:

1. A steam injector for furnaces comprising a pair of discharge pipesbrancl'iing in a horizontal plane, and a pair of jet nozzles terminatingeach of said discharge pipes and diverging in a substantially verticalplane, and having outlets, the directions of which are convergent.

2. A steam injector for furnaces comprising a pair of branchingdischarge pipes, a pair of jet nozzles terminating each discharge pipe,and diverging transversely to the plane of said discharge pipes, andhaving outlets opening in convergent directions each pair of saidnozzles converging toward the other pair at an acute'angle.

In witness whereof I hereunto set my hand.

NON BROWN,

